Includes the stories "Counter Foil" by George O. Smith, "A Bad Day For Sales" by Fritz Leiber, "Without a Thought" by Fred Saberhagen, "Solar Plexus" by James Blish, "The Macauley Circuit" by Robert Silverberg, "But Who Can Replace a Man" by Brian Aldiss, "Instinct" by Lester Del Rey, "The Twonky" by Lewis Padgett, "The Hunting Lodge" by Randall Garrett, and "With Folded Hands" by Jack Williamson.
